Recently, a ct scan showed mild left lateral ventricle larger than the right. This is a new development for me. My shunt is on the right in my posterior fossa. I'm not sure what this means. I have many symptoms that I have been battling for awhile now. Does anyone have input on this? Thank you.
Thank you soo much , I really appreciate it
In early stages of development, if the membranes are not formed properly, the cysts may form. A cyst is a localized collection of fluid. (in this case, the cerebrospinal fluid).
Hope this helps you.
So, the answer to your question is YES! It is the base of the skull (posterior fossa) that is the key. If it is too small for the hind brain, then it will cause pressure and sometimes herniation.
You may would find the Chiari Institutes's videos very interesting because they really explain Chiari in depth.
i dont know much about cysts, but i recently found out i have a small subarachnoid cyst of the posterior fossa. so far i havent found any evidence whether or not this causes symptoms. however i have developed progressing symptoms over the years which is why i got the cat scan. i dont know if this is related or if this is something i always had, or is new. sometimes people are born with them thought. when i was 5 i was diagnosed with diffuse cerberlar dysfunction and adhd.
This examination shows a large cisterna magan, normal variant in the posterior aspect of the posterior fossa. The vermis is intact.. the right and left cerebellar hemispheres are normal. the brain stem is normal. there is no significant white matter disease. There is a signal small focos of high FLAIR signal in the deep white mater deep to the right sylvain fissure which, as I have stated, is non specific. The white matter is otherwise normal.
I have Chiari Malformation Type 1 and Syringomyelia. I had posterior fossa decompression surgery three and a half years ago. Many of my symptoms eased up, at least a bit. However, this past week or so, my back has been in incredible pain (more so than usual); and my nose has felt like I breathed a bunch of water through it. It is also running like crazy (not boogery mucus or anything, but more like a thin liquid. and not always, just randomly.
internal auditory canals, cerebellopontine angles, mastoids normal. No enhancing lesions. No abnormal enhancement post contrast.
DIFFUSION IMAGING: negative for acute or subacute infarction.
ORBITS: no masses. Globes normal.
PARANASAL SINUSES: no fluid levels. Mucosa normal.
OTHER: no other significant finding.
IMPRESSION: findings worrisome for Brainstem glioma.
I get the same pains although a lot of my head pain feels more like pressure that is located in my posterior cranial fossa. I do have explosion like feelings in my head (behind the bridge of my nose) and bruise-like pain on my scalp. I was recently diagnosed with lesions and a 4 mm nodule on the anterior lobe of my pituitary gland. I think its called a microaneoma. (SP?
I agree that most of your husband’s symptoms can be explained by increased intracranial pressure caused by a posterior fossa lump/tumor/cyst. However, posterior fossa cysts have a high surgical morbidity (very risky for life). So, often a decompression surgery is performed wherein a shunt is placed. Alternatively your surgeon may or fenestrate (perforate) the cyst through endoscopic surgery.
Retrocerebellar CSF collection that may affect enlarged cisterna magna, developmental/anatomical variation versus posterior fossa arachnoid cyst.
I don't understand what it means, or if I should continue seeing my ENT Doctor now that I have this result. He recommended I do the MRI as I have vertigo, predominantly in the mornings.
Thank you for any answer.
Has anyone seen a surgeon who will do the posterior fossa box surgery for cerebellar slump? On the Conquer Chiari site, I read a summary of a study done at UCLA but cannot find the surgeon, J.B. Heller, who coauthored the article and did the surgeries. Anybody know anything? My son (19 years old) is 3 years post chiari surgery (three surgeries with lots of complications) and continues to have severe headaches and related symptoms that are debilitating.
Rumpled gave you a concise answer about what Arachnoid Cysts are! They commonly occur in the posterior fossa region of the brain. What symptoms do you have? Many AC's are found incidentally.
You should join the ARACHNOID Cyst Awareness Network to interact with many others who have AC's and exchange information about them. I have a large sub-Arachnoid Cyst that affects my cerebellum, midbrain, and caused hydrocephalus in my 3rd and lateral ventricles.
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